Financial Guarantees and Condensed Consolidating Statement of Cash Flows (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 29, 2014	Jun. 28, 2014
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ (529,000)	$ (14,589,000)	$ (14,589,000)
Effect of Exchange Rate on Cash and Cash Equivalents	(5,026,000)	(512,000)	(512,000)
Cash and Cash Equivalents, Period Increase (Decrease)	(17,890,000)	(26,424,000)	(26,424,000)
Less: Earnings attributable to noncontrolling interest and redeemable noncontrolling interest	(316,000)	(16,000)
Investing activities:
Purchases of property, plant and equipment	(11,010,000)	(14,115,000)	(14,115,000)
Proceeds from sale of assets	(532,000)	0
Acquisition of intangibles and other	(113,000)	(57,000)	(57,000)
Intercompany investing activities, net	0		0
Net cash provided by (used in) investing activities	(10,591,000)	(14,172,000)	(14,172,000)
Financing activities:
Proceeds from long-term borrowings	15,000		3,152,000
Proceeds from short-term borrowings	18,974,000	7,606,000	7,606,000
Repayment of long-term borrowings	(11,785,000)	(5,960,000)	(5,960,000)
Repayment of short-term borrowings	(8,948,000)	(1,949,000)	(1,949,000)
Intercompany financing activities, net	0		0
Cash and cash equivalents at beginning of period	178,491,000	86,064,000	86,064,000
Cash and cash equivalents at end of period	160,601,000	59,640,000
Net Cash Provided by (Used in) Financing Activities	(1,744,000)	2,849,000	2,849,000
PGI (Issuer)
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(33,186,000)		(35,352,000)
Effect of Exchange Rate on Cash and Cash Equivalents			0
Cash and Cash Equivalents, Period Increase (Decrease)	(31,694,000)		(1,304,000)
Less: Earnings attributable to noncontrolling interest and redeemable noncontrolling interest	0	0
Investing activities:
Purchases of property, plant and equipment	(186,000)		(746,000)
Proceeds from sale of assets	0
Acquisition of intangibles and other	(113,000)		(57,000)
Intercompany investing activities, net	2,845,000		11,035,000
Net cash provided by (used in) investing activities	2,546,000		10,232,000
Financing activities:
Proceeds from long-term borrowings	0		3,000,000
Proceeds from short-term borrowings	869,000		1,024,000
Repayment of long-term borrowings	(1,788,000)		(3,898,000)
Repayment of short-term borrowings	(135,000)		(478,000)
Intercompany financing activities, net	0		24,168,000
Cash and cash equivalents at beginning of period	34,720,000
Cash and cash equivalents at end of period	3,026,000	764,000
Net Cash Provided by (Used in) Financing Activities	(1,054,000)		23,816,000
Guarantors
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	5,433,000		30,624,000
Effect of Exchange Rate on Cash and Cash Equivalents			0
Cash and Cash Equivalents, Period Increase (Decrease)	15,154,000		(2,761,000)
Less: Earnings attributable to noncontrolling interest and redeemable noncontrolling interest	0	0
Investing activities:
Purchases of property, plant and equipment	(3,237,000)		(5,795,000)
Proceeds from sale of assets	0
Acquisition of intangibles and other	0		0
Intercompany investing activities, net	15,803,000		(16,505,000)
Net cash provided by (used in) investing activities	12,566,000		(22,300,000)
Financing activities:
Proceeds from long-term borrowings			0
Proceeds from short-term borrowings			0
Repayment of long-term borrowings			0
Repayment of short-term borrowings			0
Intercompany financing activities, net	(2,845,000)		(11,085,000)
Cash and cash equivalents at beginning of period	76,744,000
Cash and cash equivalents at end of period	91,898,000	10,342,000
Net Cash Provided by (Used in) Financing Activities	(2,845,000)		(11,085,000)
Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	27,224,000		(9,861,000)
Effect of Exchange Rate on Cash and Cash Equivalents	(5,026,000)		(512,000)
Cash and Cash Equivalents, Period Increase (Decrease)	(1,350,000)		(22,359,000)
Less: Earnings attributable to noncontrolling interest and redeemable noncontrolling interest	(316,000)	(16,000)
Investing activities:
Purchases of property, plant and equipment	(7,587,000)		(7,574,000)
Proceeds from sale of assets	(532,000)
Acquisition of intangibles and other	0		0
Intercompany investing activities, net	0		50,000
Net cash provided by (used in) investing activities	(7,055,000)		(7,524,000)
Financing activities:
Proceeds from long-term borrowings	15,000		152,000
Proceeds from short-term borrowings	18,105,000		6,582,000
Repayment of long-term borrowings	(9,997,000)		(2,062,000)
Repayment of short-term borrowings	(8,813,000)		(1,471,000)
Intercompany financing activities, net	(15,803,000)		(7,663,000)
Cash and cash equivalents at beginning of period	67,027,000
Cash and cash equivalents at end of period	65,677,000	48,534,000
Net Cash Provided by (Used in) Financing Activities	(16,493,000)		(4,462,000)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	0		0
Effect of Exchange Rate on Cash and Cash Equivalents			0
Cash and Cash Equivalents, Period Increase (Decrease)			0
Less: Earnings attributable to noncontrolling interest and redeemable noncontrolling interest	0	0
Investing activities:
Purchases of property, plant and equipment	0		0
Proceeds from sale of assets	0
Acquisition of intangibles and other	0		0
Intercompany investing activities, net	(18,648,000)		5,420,000
Net cash provided by (used in) investing activities	(18,648,000)		5,420,000
Financing activities:
Proceeds from long-term borrowings			0
Proceeds from short-term borrowings			0
Repayment of long-term borrowings			0
Repayment of short-term borrowings			0
Intercompany financing activities, net	18,648,000		(5,420,000)
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0	0
Net Cash Provided by (Used in) Financing Activities	$ 18,648,000		$ (5,420,000)